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How to Buy and Use RF Remote Control Modules - Control Any Electrical Gadget Remotely

Remote controls have always been an intriguing device for all of us because of one good reason: It allows us to operate distant gadgets with a flick of a button, without having to move an inch. Today with the advancement of technology remote control switches have become accessible very easily from the market and we can buy such units quite cheaply and install them as per our own specific needs.

Making a Programmable Timer Circuit Using a Digital Clock

I have already discussed one programmable timer circuit in this blog earlier, the circuit involves the IC 4060 for generating the basic oscillations which is further used for generating the required time intervals, however this cannot be synchronized with an external clock. The following circuit was requested by Mr.Amit, here the concept makes use of a clock for acquiring the required base timing oscillations and therefore is able to get synchronized with external clocks or watches.

Make this 48V Automatic Battery Charger Circuit

The following article explains a very simple yet effective 48v automatic battery charger circuit, utilizing very ordinary components. The circuit is highly accurate with  its over charge cut off features.

Simplest Mains Operated LED Flasher Circuit - Astable Multivibrator Circuit

The following mains operated LED flasher circuit which is actually an astable multivibrator circuit utilizes only a diac and resistor arrangement for implementing interesting wig wag flashing of two LEDs. The circuit was shared with me by Mr.Vineesh, who is one of the keen followers of this blog. I would like to present the email that was sent to me by Mr.Vineesh.

High Current Transformerless Power Supply Circuit

The simple configuration of a transformerless power supply circuit presented below is able to provide high current at any assigned fixed voltage level. The idea seems to have solved the problem of deriving high current from capacitive power supplies which earlier seemed a difficult proposition. I assume I am the first person to have invented this.

LED Emergency Light Circuit With Battery Over Charge Protection

The following circuit was designed by me in response to the request sent by PP. The article describes an LED emergency light circuit with advanced features such as, over charge battery cut off, day time auto-disable, and need less to say that the circuit switches ON the LEDs automatically when AC mains fails and reverts to charging mode when power is restored.

Make a Room Air Ionizer Circuit - Get a Pollution Free Environment Right In Your Home

Have you ever thought or wondered why atmosphere over hill stations and other similar places which are far away from modern cities give you a feeling of  freshness and good health? The answer is simple, the air in such places are free from pollutants and  harmful chemicals like smoke and gases. Well, if you are settled in one of those cities which is engulfed with bad air and if you have compromised with the situations, here's your chance to get rid of the situation through the circuit explained below:

Simple Intercom Circuit

The article presented below describes a very simple intercom system which can be built and installed at any required place very cheaply. The circuit utilizes just a single IC and a very few other components for the entire assembly.

LM386 Amplifier Circuit Explained

The IC LM386 is a 8-pin tiny power amplifier chip, specially made for operating under relatively low voltage parameters, yet provide considerable amplification. IC LM386 amplifier circuit becomes suitable for applying in small low power audio gadgets like in FM radios, door bells, telephones etc.

Automobile Head Light Dipper, with Cell Phone Charger Circuit

The following circuit was designed by me in response to the request sent by Miss. Surya. Actually the presented idea is a combination of three circuit designs already posted in this blog with different titles, they have been integrated together to fulfill the requested design. To see the request sent by  Miss Surya you may refer here.

Make a Football Electricity Generator Circuit

The explained football electricity generator circuit was developed by me in response to the request sent by one of the readers Mr.Bright. Though I am not sure if the explained concept would actually give the intended results, it's worth trying as it's quite easy to understand and build.